Provided by: radiance_4R0+20110410-1build1_amd64

**NAME**

genprism - generate a RADIANCE description of a prism

**SYNOPSIS**

genprismmatname{-|vfile|Nv1v2..vN} [-llvect][-rradius][-c][-e]

**DESCRIPTION**

Genprismproduces a RADIANCE scene description of a prism, or extruded polygon. The polygon to extrude lies in the z==0 plane, and is given as a list of (x,y) pairs on the standard input (-), or from the filevfile,or on the command line preceded by the number of vertices,N.The order of the vertices and the extrusion vectorlvect(default (0,0,1)) determine the surface orientations. The surfaces that make up the prism will be modified bymatand their identifiers will begin withname.The-roption may be used to round the corners of the object using spheres and cylinders. The-coption inhibits generation of a face connecting the last vertex to the first. The-eoption inhibits generation of the end polygons.

**EXAMPLE**

To produce a equilateral triangular prism: genprism clear_plastic prism 3 0 0 .5 .866 1 0

**AUTHOR**

Greg Ward

**BUGS**

The rounding option only works for opaque prisms with outward facing normals. If the normals face inward, the appearance will be bizarre.

**SEE** **ALSO**

genrbox(1), genrev(1), gensurf(1), genworm(1), rpict(1), rvu(1), xform(1)